Replace old PHP7 example with PHP8

Author: TrafeX

README.md

@@ -51,11 +51,11 @@ Nginx configuration:
 
 PHP configuration:
 
-    docker run -v "`pwd`/php-setting.ini:/etc/php7/conf.d/settings.ini" trafex/php-nginx
+    docker run -v "`pwd`/php-setting.ini:/etc/php8/conf.d/settings.ini" trafex/php-nginx
 
 PHP-FPM configuration:
 
-    docker run -v "`pwd`/php-fpm-settings.conf:/etc/php7/php-fpm.d/server.conf" trafex/php-nginx
+    docker run -v "`pwd`/php-fpm-settings.conf:/etc/php8/php-fpm.d/server.conf" trafex/php-nginx
 
 _Note; Because `-v` requires an absolute path I've added `pwd` in the example to return the absolute path to the current directory_